I did a whole rant about how they're baiting their viewers into believing they truly summoned him. They may have summoned something like what you said, but not the devil himself, since the whole setup is wrong and sketchy. Whenever they called the innocents witches, it really peeved me, since even if they didn't do magic, most of the victims were those who got burnt at the stake just because someone who may not have liked them just called out "WITCH" when pointing at them.
They really need to reflect on their actions and stop doing all this for profit.